Improvement in fruit-driers



S. R. GRIFFITH.

Patented July v1.7-, 1877.

neuves-noun- N. PETERS. FHOTO-LITHOGRAPHER. WASHINGTON. D Cy SAMUEL R. GRIFFITH, OF BLOOMINGTON, AssicNoR rro JOHN R. DODGE, JR., AND wirr. snURTLRFF, or NORMAL, ILLiNOIs.

IMPROVEMENT IN FRUITDRIERS.

Specification forming part of Letters Patent No. E93,213 dated July 17, 1877 application filed June 27, 1877.

To all whom z'tnmty concern Be it known that I, SAMUEL R. GRIFFITH, of Bloomington, in the county of McLean and State of Illinois, have invented certain new and useful Improvements in Driers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being made to the accompanying drawings, forming a part of this specication, in which- Figure l is a longitudinal section of my improved drier; Figs. 2 and 3, cross-sections of the same; Fig. 4, a detail view. Y

This invention relates to improvements in apparatus for drying and bleaching fruit, and relates more particularly to improvements upon the patent to John R. Dodge, Jr., dated May 15, 1877, and No. 190,748; and the invention consists in the construction and arrangement of parts, as will be hereinafter more fully described.

In the drawing, A represents the heatingchamber, provided with a stove, furnace, or other heating device, B, having a surrounding jacket, .0. Said jacket is provided with pipes a,l a, communicating with the open air, for supplying fresh air to the apparatus. .Above the chamber A is a double horizontal chamber, D D, one end being supported by said chamber, and the other Vby legs d d. E E are screens for thereception of the material to be dried,

' and are inserted through doors at both ends of the drying-chamber, said screens being ,supported upon side rails F.

H H represent two partly-perforated pipes or conductors extending longitudinally along under the screens inthe drying-chamber, each pipe being closed at its end x, and having a small elongated opening in the top near said end Each of said pipes is also provided with a mouth enveloping a portion of the top of the surrounding jacket C of the heating device, said pipes conducting and distributing a portion of the heated air throughout the entire length of the drying-ch amber, thus giving an equable and advantageous diusion of heated air throughout said drying-chamber.

The heating-chamber communicates directly with the front end of the drying-chamber, and directly over the heating device, and under the first screens in the drying-chamber are arscreens immediately above the heating device,

resulting from careless overheating of the heating device. These plates are supported in side grooves in theside rails I I.

J is a pipe connecting with the heating device, and through which the products of combustion may escape. This pipe extends longitudinally through chamber D, and passes into and up through the exhaust-shaft K,

which communicates with the drying-chamber through the top, near the further end thereof.

LL are two exhaust-pipes communicating from thetop of the double drying-chamber, with the exhaust-shaft K, and which draw oft` the steam arising from the fruit or other material being dried, and said pipes are each provided with a slide or cut-oli', e, whereby the davor from the material being dried can be kept in the drying-chamber as long as desired.

M represents a bleaching-chamber arranged in rear of the heating-chamber, for the fumigation of the fruit. The screens of fruit' are placed or supported upon the side rails m, and are subjected to the fumes of aburning compound, composed of sulphur, charcoal, and alum, such as is described in patent to John R. Dodge, Jr., dated June 5, 1877.

The bleaching-chamber, being arranged in rear of the heating-chamber, and under the drying-chamber, is kept in a heated or dry state from said chambers, and its close proximity to said drying-chamber makes it very convenient in transferring the fruit from one chamber to the other.

I do not desire to confine myself to the use of two heating pipes or conductors, as one might be used with nearly-equal effect; nor do I Wish to conne myself to the two perforated plates shown, as each side of the dryingchamber might be provided with them.

I claim as my invention- 1. The combination, with the drying and heating chambers,of the bleaching-chamber-f M, arranged inrear of said heating-chamber, andfidersaid ldryin g-ch'ambe'r, "substantially as and for the purpose specified.

2. The combination, with the dryn'gi'a'd heating chambers and heating device, of the longitudinal perforated'airlooii'dueting pipes H, perforated plates G G', lon gitudi-naltiue or pipe J, exhaust-shaft K, and exhaust-pipes L, the several parts constructed and relatively arranged substantially asvherein 'showh and' described.

3. rlhe combination, with the drying and heat? ing chambers and heating device, ofthe longi-` tudinalwperforated air-conductin g pipe or pipes H lanfd perforated plates 'Gf G', arranged in' the frontend of the drying-chamber and directly over the heating device, whereby the heated air is equally distributed throughout the drying-chamber, substantially as specified.

In' testimony that I 'clair'nthe foregoing I have hereunto setfmy hand this 20th day of June, 1877.

-SA-MUEL R. GRIFFITH.

Witnesses: l

THos. SLADE, RANDoLPH .Ai-PIKE.; 

